The SST analysis is computed daily on a 0.25 degree latitude/longitude grid.
This is version 1.0. There are two products with different satellite data; we are archiving the AVHRR version
as it is starts earlier (NOAA refers to it as the AVHRR product). The data use in situ data from ships and buoys.
SSTs are generated
for sea-ice concentrations above 50%. The sea ice for 1985-2004 is from
http://nsidc.org/data/nsidc-0051.html
(Cavalieri D., C. Parkinson, P. Gloerson, and H.J. Zwally. 1997, updated 2005.
Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data,
June to September 2001. Boulder, CO, USA). The sea ice from 2005 to present is from
http://polar.ncep.noaa.gov/seaice/
(Grumbine, R. W., 1996: Automated passive microwave sea ice concentration
analysis at NCEP, 13pp. Unpublished manuscript available from NCEP/NWS/NOAA,
5200 Auth Road, Camp Springs, MD, 20746, USA.)

NODC's AVHRR Pathfinder Version 5 is the satellte data used.
http://pathfinder.nodc.noaa.gov
for January 3, 1985 though December 31, 2005 and the operational US Navy AVHRR data
(May, D.A., M. M. Parmeter, D. S. Olszewski and B. D. McKenzie, 1998: Operational
processing of satellite sea surface temperature retrievals at the Naval Oceanographic
Office, Bull. Amer. Met. Soc., 79, 397-407) from January 1, 2006, through present.
This product will henceforth be referred to as the AVHRR product.

The analysis includes a bias correction of the satellite data with respect to
in situ data using an empirical orthogonal teleconnection (EOT) algorithm.
A description of the complete analysis procedure can be found in
the paper by Reynolds et. al 2006: Daily High-resolution Blended Analyses.
(ftp://eclipse.ncdc.noaa.gov/pub/OI-daily/daily-sst.pdf).

Please note: If you acquire NOAA High-resolution
data products from PSD, we ask that you acknowledge us in your use of the
data. This may be done by including text such as
NOAA High-resolution data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at
http://www.esrl.noaa.gov/psd/ in any documents or publications using
these data. We would also appreciate receiving a copy of the relevant
publications. This will help PSD to justify keeping the
NOAA High-resolution data set freely available online in the
future. Thank you!